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Finding the Fourth Proportional to 173,385.60, 260,078.40 and 90,268.80

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Solution

The fourth proportional to 173,385.60, 260,078.40 and 90,268.80 is: 135,403.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,385.60 : 260,078.40 = 90,268.80 : x
  2. Step 2: Convert to fraction form
    173,385.60/260,078.40 = 90,268.80/x
  3. Step 3: Cross multiply
    173,385.60x = 260,078.40 × 90,268.80
  4. Step 4: Simplify right side
    173,385.60x = 23,476,965,073.92
  5. Step 5: Solve for x
    x = 23,476,965,073.92/173,385.60
  6. Step 6: Final answer
    x = 135,403.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.